6 Configuration
6.1 Configuration of redundant optical rings
42
Version 04 05/2014
42
The calculation of the slot time only takes into considera-
tion the optical network and the connection of bus sub -
scribers to the OZD Profi via an RS 485 bus segment
with a respctive length of max. 20 m. Longer RS 485 bus
segments must be allowed for by adding them to the
Length
OF
.
Note:
When the slot time is configured with a too small value
the OZD Profi 12M … PRO will, through it’s fault function
and fault indications, indicate such. The System-LED will
blink red/green.
1)
Using the OZD Profi 12M G11-1300 PRO and … G12-
1300 (EEC) PRO at data rates of 12 MBit/s, 6 MBit/s, 3
MBit/s and 1.5 MBit/s the minimum slot times according
to the following table must be met.
Data rate
Minimum slot time
12 MBit/s
3800 t
Bit
6 MBit/s
2000 t
Bit
3 MBit/s
1000 t
Bit
1.5 MBit/s
530 t
Bit
Table 4: Minimum slot time on OZD Profi 12M G11-1300 PRO
and OZD Profi 12M G12-1300 (EEC) PRO
Use the values from Table 4 if the calculated slot time
is smaller than the minimum slot time indicated in the
table.